Abstract: A presettable counter operated control mechanism employing a spring lock latching arrangement for releasably locking a rotatable control member in different angularly loaded positions. A coil spring connected to the control member encircles a first drum and is selectively frictionally anchored to the drum by a latching arrangement which is releasable by the counter reaching a referenced count to releasably lock the control member at a particular angular position. Two latches provide for releasably locking the control member at two different angular positions thereof, and are tripped at two respective referenced counts, with both latches being tripped at the later reference count. Final release of the control member is operative to terminate counting operation.An interlock between the control member and the wheel presetting mechanism prevents interference with the setting of the counter wheels while the control member is locked and the counter is counting.

Abstract: A door operator includes a threadless drive shaft, a carriage mounting skewed rollers engaging the drive shaft to move the carriage along the shaft upon shaft rotation, a drive motor having a shaft coaxial with the threadless shaft and a helical coupling connecting the shafts together. The coupling comprising a plurality of closely spaced helical convolutions with the end of the coupling secured to the motor shaft and the drive shaft, respectively. The coupling includes means for decreasing the shear stresses imposed on the end portions of the convolutions.

Abstract: A detonating cap assembly is provided with a fuse-retaining bushing for protecting the charge within the cap from accidental ignition by static charges accumulating on the fuse. The bushing is an elongated semi-conductive plastic member slidably received within the shell of the cap and having a longitudinally extending axial bore for receiving the fuse and providing a stand-off from the charge within the cap. The bushing incorporates a thin rupturable membrane at its innermost end within the stand-off and a side notch adjacent the membrane forming a shunt path extending laterally outwardly from the bore toward said shell for diverting static charge from the fuse toward the shell of the cap.

Abstract: There is disclosed a nozzle having a three-part nozzle body comprising a nozzle holder, a valve guide and a nozzle tip which are positioned and axially aligned by a surrounding retaining nut. Communicating passages for the delivery of fuel to the nozzle tip are provided in the walls of the nozzle body and a pair of locating pins span the mating ends of the three parts thereof to maintain them in angular alignment. The locating pins are of different diameters and are placed in the ends of a single stepped bore of the valve guide. A gland nut surrounding the nozzle holder is provided to mount the nozzle in the bore of an engine and a keeper ring around the nozzle holder engages the outer end of the gland nut to apply an axial extracting force when the gland nut is unscrewed.

Abstract: A continuous envelope system for attaching generally conventional paper envelopes to a paper carrier sheet with spots of adhesive adjacent the outer edge of the envelope sealing flap and adjacent the upper edge of the envelope back panel and employing a detacher for subsequently detaching the envelopes from the paper carrier sheet as they are conveyed through the detacher by gradually separating the carrier sheet from the envelopes to form connecting tears therebetween and by severing the connecting tears at the envelopes with the teeth of a severance blade to detach the envelopes without forming unacceptable blemishes thereon.

Abstract: A clock with a rotary drive motor having a pair of axially aligned stator subassemblies with identical molded frame parts with interfitting end portions rotatably supporting a permanent magnet rotor and take-off gears. A separate axially extending U-shaped pole piece is mounted on each frame part to provide four stator poles equiangularly spaced about the axis of the rotor, and each frame part forms a coil bobbin for winding a stator coil for the respective pole piece.

Abstract: An improved adjustable track cover assembly is provided which facilitates adjustable positioning of a track cover over a work blank feed track and which maintains the position established. The track cover assembly includes a cover supporting bracket which is operatively supported by an adjusting screw in threaded engagement therewith. The adjusting screw is supported for selective adjusting rotation relative to the cover bracket. Snubbing means, including spring means and a member in threaded engagement with the adjusting screw, coact with the bracket to impede relative rotation between the bracket and adjusting screw and thereby maintain a fixed positioning of the track cover. Additional spring means, associated with the adjusting screw support, coact with the adjusting screw to maintain a fixed positioning of the adjusting screw.

Abstract: In order to provide intrinsically safe operation of an electromagnetically operated device, such as a pneumatic or hydraulic valve, a circuit in accordance with the invention includes electrical energy storage means, such as a capacitor, which is charged from a source at an intrinsically safe energy level and is subsequently at least partially discharged via switching means through an operating coil of the electromagnetic device. The capacitor is preferably charged from an intrinsically safe d.c. supply via a diode which inhibits discharging of the capacitor back into the d.c. supply. The switching means preferably operates to connect the capacitor to the operating coil when the charge on the capacitor reaches a predetermined level, as determined by a voltage sensitive device which responds to the capacitor voltage.

Abstract: An all ports in body, solenoid operated valve assembly includes a valve body and a valve operator mounted on the body with an electromagnetic core featuring a center leg projecting axially beyond the solenoid coil. A plunger and seal assembly is mounted for reciprocation along a path of movement aligned with the core center leg. The plunger and seal assembly is remotely located from the coil and all flow passages are formed in the assembly such that fluid flow through the center of the coil is excluded to minimize heat transfer to the confined fluid being controlled when the valve is electrically energized and to prolong the orifice seal life of the assembly.

Abstract: A valve system with an electromagnetically operated pilot valve for pneumatically actuating an operating piston of a primary valve for accurately metering, controlling and/or dispensing fluid with the primary valve. The piston is connected for pivoting a valve member actuating rod enclosed within a flexible tubular projection of a Teflon valve body via a rocker arm engageable with a free end of the tubular projection. Connectors for inlet and outlet Teflon conduits to the Teflon valve body have hard plastic inserts mounted within inlet and outlet passageways of the valve body between conforming sealing surfaces of the valve body and conduits.

Abstract: A new and improved nonadjustable self-cleaning dewatering screen panel assembly suited to vibratory dewatering of fluid slurries containing fine particulate solid material is comprised of a rigid frame member and a substantially planar screen panel mounted within the frame and secured thereto under tension in both planar directions. The screen panel is a unitary one piece elastomeric sheet consisting of a plurality of pulsator portions and integral bordering stabilizer portions. The pulsator portions of the elastomeric panel are comprised of a multitude of substantially identical diaphram elements arranged in intimate, aligned and confronting relationship so as to present a smooth top screening surface.

Abstract: The invention is concerned with a security key-ring meant in particular for prison turn-keys.It is composed of two half-shells, one male and one female, fitting together, that contain in the space between them an automatic roll-up mechanism with a strong recall spring in its rolled-up position, which mechanism pulls along a solid small chain sliding over the upper edge of the housing and reliably connected with a ring carrying the set of keys, having as a special feature that the rear face of the housing shows a metal fastening assembly in the shape of a clasp which holds it securely to the housing on a plane for its support.The invention can be expected to interest all key-ring manufacturers and those of small linear measuring instruments.

Abstract: A pulse generator is comprised of an asymmetrical magnet assembly and a Hall sensor operative for generating an electrical signal upon the application of a magnetic field thereto. The Hall sensor and magnet assembly are mounted for relative movement for the generation of a train of electrical signals in response to relative displacement therebetween. The asymmetrical multi-pole magnets in the magnet assembly have a plurality of symmetrically spaced pole pairs with each pole pair including a magnetic pole of predominant polarity occupying a substantially greater area than the pole of opposite polarity. The predominant pole is sufficiently strong to provide a salient magnetic field of essentially single polarity. a magnetizing head also is provided for producing the asymmetrical pole character of the magnet.

Abstract: A fuel injection pump with a control system for regulating the quantity and timing of the delivery of fuel to an associated engine is disclosed. In the control system, three pistons, slidably mounted in parallel bores, are provided. One of the pistons is powered so that it assumes an axial position indicative of engine speed. A second piston is powered to assume an axial position indicative of the quantity of fuel being delivered by the pump. The first and second pistons are each provided with a cam surface, and cam followers controlled thereby interconnect these pistons with the third piston to control the axial position of the third piston and the timing of delivery of fuel by the pump.

Abstract: A low cost resettable counting mechanism comprising an electromagnetic indexing mechanism and a counter stepped by the indexing mechanism having three-piece higher order number wheels with respective unitary molded plastic reset and drive pawl members for connecting the number wheels for counting and resetting purposes. A detent arm integrally formed with the number wheel shaft engages a recess in the counter viewing crystal to hold the countershaft against rotation during counting and the counter shaft is manually rotatable for resetting the higher order number wheels. A clapper and plastic verge of the indexing mechanism interfit to retain them in assembled relationship.

Abstract: An electric flashlight comprising a first circuit contact, a second circuit contact spaced from the first contact and a switch for selectively connecting and disconnecting the first and second contacts. The switch includes a casing having spaced ends and side walls with a leaf spring forming the switch contact strip pivoted intermediate its ends on the casing to form a first spring portion which is movable into and out of engagement with the first circuit contact and a second spring portion in permanent engagement with the second circuit contact. The spring is provided with spaced protuberances which engage, the inner surfaces of said casing end walls, the distance between the end walls being less than the distance between the protuberances which causes flexure of the spring. Actuating members are provided which selectively effect the movement of the first spring portion into and out of engagement with the first circuit contact.

Abstract: An electromagnetic counter with a rotary counter and an electromagnetic operator for indexing the counter having a generally U-shaped core plate mounted in opposed pockets in parallel end supports of a plastic support frame, an energizing winding on one of the parallel legs of the core plate, and a pivotal actuator connected for indexing the counter having a ferromagnetic armature member positioned aside and extending transversely of the parallel legs of the core plate. A ferromagnetic insert having a preselected configuration and permeability is inserted through a slot in the support frame and press fit between the parallel legs of the core plate to provide a saturable magnetic shunt for preventing electromagnetic operation of the counter by electrical noise spikes of relatively short duration and to provide an air gap filler for reducing the incipient air gap of the electromagnet.

Abstract: A method of forming a handle connection for an impact tool such as a hammer is disclosed which includes the steps of forming the metallic tool head with a handle-receiving eye in which a portion of the eye spaced from the entrance end increases in cross-section toward the exit end, inserting a non-metalic handle having an end portion within the eye dimensioned to form a tight fit with the entrance end of the eye but having a clearance between it and the portion of the eye which increases in cross-section, said end portion in addition having a peripheral indentation or recess in its outer surface, injecting a tough, hard and rigid molding thermoplastic, preferably glass-filled, into the space between the end portion of the handle and the eye, the plastic being in a heated flowable state and being injected under sufficient pressure to compress the end portion of the handle, and permitting the plastic to solidify while maintaining said pressure whereby the plastic forms a tight mechanical interlock with the hand

Abstract: Apparatus for generating wire reinforced tubular duct featuring a cantilever mounted mandrel supported for rotation and serving as a supporting surface about which lapping wraps of flexible strip of duct material are formed along a helical path around and forwardly off the mandrel. A helical guide fixed in relation to the mandrel and an endless drive belt coact to drive the flexible duct material along its helical path with the drive belt serving to advance the flexible duct material axially along the mandrel and to rotate the mandrel.

Abstract: A tufted nonwoven web material exhibiting high loft, bulk and absorbency is made by a papermaking technique using an apertured, plate-like, fiber-collecting element having a structure appropriate to preventing entanglement between adjacent tufts prior to removal from the element. The apertured element is adapted not only to form the tufted nonwoven fibrous web but also to permit consolidation of individual tufts and facilitate the formation of tufted webs from 100 percent wood pulp. Additionally, webs having tufts on both planar surfaces also can be formed by this technique.